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SEM images of silicone infiltrated structures. Silicone particles were embedded within the silicone resin and no significant cracks or voids were observed. This shows that the silicone resin filled the pores of the green parts and was successfully integrated into the main structure using the pressure-vacuum processing sequence. (a) Nonvolatile ratio 5%. (b) Nonvolatile ratio 20%. (c) Polymer coating ratio 8%. (d) Polymer coating ratio 20%.
